Василий Басалаев / mbed-I2CIO

Modification of mbed-src library only for STM32F030F4, very cheap microcontroller in 20-Pin TSSOP package, with 16Kbytes of Flash and 4Kbytes of Ram. **Target for online compilator must be Nucleo 32F030R8.** 01.02.2018 Acosinwork: Fork of mbed-STM32F030F4 library. Support for Troyka GPIO expander by Amperka. http://amperka.ru/product/troyka-gpio-expander

Fork of mbed-STM32F030F4 by Nothing Special

common/FileSystemLike.cpp@12:6f07dd7cbe47, 2018-02-01 (annotated)

Committer:
acosinwork
Date:
Thu Feb 01 10:37:10 2018 +0000
Revision:
12:6f07dd7cbe47
Parent:
0:38ccae254a29 
Change pin mapping and set internall oscillator as default. Fork to support Troyka GPIO expander (I2C I/O); http://amperka.ru/product/troyka-gpio-expander

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mega64 0:38ccae254a29 1 /* mbed Microcontroller Library
mega64 0:38ccae254a29 2 * Copyright (c) 2006-2013 ARM Limited
mega64 0:38ccae254a29 3 *
mega64 0:38ccae254a29 4 * Licensed under the Apache License, Version 2.0 (the "License");
mega64 0:38ccae254a29 5 * you may not use this file except in compliance with the License.
mega64 0:38ccae254a29 6 * You may obtain a copy of the License at
mega64 0:38ccae254a29 7 *
mega64 0:38ccae254a29 8 * http://www.apache.org/licenses/LICENSE-2.0
mega64 0:38ccae254a29 9 *
mega64 0:38ccae254a29 10 * Unless required by applicable law or agreed to in writing, software
mega64 0:38ccae254a29 11 * distributed under the License is distributed on an "AS IS" BASIS,
mega64 0:38ccae254a29 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mega64 0:38ccae254a29 13 * See the License for the specific language governing permissions and
mega64 0:38ccae254a29 14 * limitations under the License.
mega64 0:38ccae254a29 15 */
mega64 0:38ccae254a29 16 #include "FileSystemLike.h"
mega64 0:38ccae254a29 17
mega64 0:38ccae254a29 18 namespace mbed {
mega64 0:38ccae254a29 19
mega64 0:38ccae254a29 20 class BaseDirHandle : public DirHandle {
mega64 0:38ccae254a29 21 public:
mega64 0:38ccae254a29 22 /*
mega64 0:38ccae254a29 23 We keep track of our current location as the n'th object in the
mega64 0:38ccae254a29 24 FileSystemLike list. Using a Base* instead would cause problems if that
mega64 0:38ccae254a29 25 object were to be destroyed between readdirs.
mega64 0:38ccae254a29 26 Using this method does mean though that destroying/creating objects can
mega64 0:38ccae254a29 27 give unusual results from readdir.
mega64 0:38ccae254a29 28 */
mega64 0:38ccae254a29 29 off_t n;
mega64 0:38ccae254a29 30 struct dirent cur_entry;
mega64 0:38ccae254a29 31
mega64 0:38ccae254a29 32 BaseDirHandle() : n(0), cur_entry() {
mega64 0:38ccae254a29 33 }
mega64 0:38ccae254a29 34
mega64 0:38ccae254a29 35 virtual int closedir() {
mega64 0:38ccae254a29 36 delete this;
mega64 0:38ccae254a29 37 return 0;
mega64 0:38ccae254a29 38 }
mega64 0:38ccae254a29 39
mega64 0:38ccae254a29 40 virtual struct dirent *readdir() {
mega64 0:38ccae254a29 41 FileBase *ptr = FileBase::get(n);
mega64 0:38ccae254a29 42 if (ptr == NULL) return NULL;
mega64 0:38ccae254a29 43
mega64 0:38ccae254a29 44 /* Increment n, so next readdir gets the next item */
mega64 0:38ccae254a29 45 n++;
mega64 0:38ccae254a29 46
mega64 0:38ccae254a29 47 /* Setup cur entry and return a pointer to it */
mega64 0:38ccae254a29 48 std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX);
mega64 0:38ccae254a29 49 return &cur_entry;
mega64 0:38ccae254a29 50 }
mega64 0:38ccae254a29 51
mega64 0:38ccae254a29 52 virtual off_t telldir() {
mega64 0:38ccae254a29 53 return n;
mega64 0:38ccae254a29 54 }
mega64 0:38ccae254a29 55
mega64 0:38ccae254a29 56 virtual void seekdir(off_t offset) {
mega64 0:38ccae254a29 57 n = offset;
mega64 0:38ccae254a29 58 }
mega64 0:38ccae254a29 59
mega64 0:38ccae254a29 60 virtual void rewinddir() {
mega64 0:38ccae254a29 61 n = 0;
mega64 0:38ccae254a29 62 }
mega64 0:38ccae254a29 63 };
mega64 0:38ccae254a29 64
mega64 0:38ccae254a29 65 FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) {
mega64 0:38ccae254a29 66
mega64 0:38ccae254a29 67 }
mega64 0:38ccae254a29 68
mega64 0:38ccae254a29 69 FileSystemLike::~FileSystemLike() {
mega64 0:38ccae254a29 70
mega64 0:38ccae254a29 71 }
mega64 0:38ccae254a29 72
mega64 0:38ccae254a29 73 DirHandle *FileSystemLike::opendir() {
mega64 0:38ccae254a29 74 return new BaseDirHandle();
mega64 0:38ccae254a29 75 }
mega64 0:38ccae254a29 76
mega64 0:38ccae254a29 77 } // namespace mbed